Objective:To construct recombinant retrovirus expressing human bone morphogenetic protein-7 gene BMP7 and to discuss its apoptosis-inducing activities and the mechanism in liver cancer cell line HepG2. Methods:BMP7 gene was amplified and reconstructed with retroviral plasmid pLP-LNCX by loxP homologous recombination,and then the plasmid pLP-LNCX-BMP7 (pLLBMP7) was transferred into packing cell line PT67 and the supernatant was collected to assay viral titer. MTT assay was adopted to observe HepG2 cells amplification. 48h after pLLBMP7 infection agarose electrophoresis and flow cytometry were used to verify apoptosis of tumor cells,and then the expression of BMP7,caspase-3 and bcl-2 proteins were detected by Western blotting. Results:Recombinant retrovirus pLLBMP7 was justified and transformed into PT67 package cell with supernatant viral titer amounted to 5?109 pfu/ml. In MTT assay retrovirus group had no evident difference from controls in cellular inhibition 72h later (35.1% vs. 5.3%,68.5% vs.18.3%,p

In recent years, preoperative therapy has become the standard procedure to improve radical resection rate and local control for advanced rectal cancer. Tumor responses to chemoradiotherapy, however, vary considerably, thus increasing the demand for both functional and morphologic radiologic evaluation of response to chemoradiotherapy to distinguish responders from nonresponders. MR imaging is considered the most accurate tool for the primary staging of tumor extent, and can be used to evaluate the efficacy of chemoradiotherapy. Functional imaging modalities including DW-MRI and PET-CT have shown promising prospect in the early evaluation of the response of rectal cancer to preoperative chemoradiotherapy. However, wide clinical application will take some time.
Chemoradiotherapy ; Humans ; Magnetic Resonance Imaging ; Neoadjuvant Therapy ; Rectal Neoplasms ; diagnosis ; drug therapy ; radiotherapy ; Tomography, X-Ray Computed ; Treatment Outcome

Computer-Assisted Instruction ; Education, Medical ; Internet ; Language ; Medicine, Chinese Traditional

Adult ; Female ; Hemoperfusion ; Humans ; Male ; Neurotoxicity Syndromes ; etiology ; therapy ; Organophosphate Poisoning ; Pesticides ; poisoning ; Retrospective Studies ; Treatment Outcome

HCV-related decompensated cirrhos,hypersplenism,thrombocytopenia,which not only affect the standard antiviral therapy,fail to achieve the sustained virological response(SVR),but also increase the risk of infection and bleeding.The only successful option is liver transplantation (LT),but the recurrence of HCV after LT remains to be resolved.The patients of HCV genotype 2 are suitable for splenectomy and antiviral therapy following splenectomy,which can achieved a higher SVR and reversed cirrhosis.As an effective alternative to splenectomy,the partial splenic embolization (PSE) can improve the changes of portal hemodynamics and reduce the sequelae of portal hypertension.The appearance of direct antiviral drugs (DAAs)has bring hope for those with decompensated cirrhos and whom IFN is contraindicated or tolerated poorly,those who are waiting for LT or with recurrence of hepatitis C after LT.The treatment of patients with decompensated cirrhos is as follows.

Objective: To investigate the effect of Sirolimus on vein graft neointima hyperplasia via oral administration compared with local delivery, and find out an effective and safe way to provide support for clinical application. Methods: A rabbit external jugular vein-to-common carotid artery model was established. Twenty-four healthy rabbits were divided into 4 groups at random: blank-control group, F-127 control group, group 3 that received locally applied slow-releasing Sirolimus with F-127, group 4 that received oral Sirolimus (the commercial name Rapamune). The ratio of intima to medium thickness and re-stenosis rate (ratio of lumina to lumina plus intima area) were measured, PCNA positive cells by immunohistochemical staining were detected to indicate the degree of cell proliferation, and apoptosis cells detected by TUNEL. Results: Compared with blank-control group, neointima hyperplasia was inhibited significantly in group 3 and group 4 intima thickness were (90.11?10.99)?m versus (29.38?10.45) ?m, (18.29?9.03)?m, respectively. Re-stenosis rate was reduced (lumina area/ total area ratio were 0. 58?0.11 versus 0.80?0.16, 0.77?0.16, respectively). Proliferation of VSMC was inhibited (cell proliferation indexes were 31.03%?6.80% versus 20.32%?9.19%, 16.22%?5.85%, respectively) and cell apoptosis level raised (cell apoptosis indexes were 16.27%?6.49% versus 33.39%? 7.05%, 33.42%?7.11%, respectively). There was no significant difference between group 3 and group 4. Conclusion: Both locally applied slow-releasing Sirolimus and oral Rapamune could inhibit vein graft neointima hyperplasia; Administration via local delivery was preferred for little side-effect on the whole body. This conclusion provides support for clinical application.

Objective Churg-Strauss syndrome (CSS) is a rare multisystem vasculitis of unknown aetiology. To describe the clinical features of the disease, the treatment and long-term follow-up. Methods Eight CSS patients were selected from rheumatology department of guangdong province peoples hospital between 2000-2005. Data were obtained retrospectively. The patients′ clinical manifestation and laboratory result were studied. Results All patients had asthma and hypereosinophilia. The lung,skin and peripheral nervous system were the most commonly involved organs. The majority of patient received intravenous injection pulses of methylprednisolone 0.5 g/d?3 d, followed by per oral prednison 1 mg?kg-1?d-1 and intravenous injection pulses of cyclophosphamide 750 mg/m2. The outcome and long-term follow-up were good. Conclusion Churg-Strauss syndrome is a systemic vasculitis occurring in patients with a history of asthma, corticosteroids and immunosuppressive treatment may received good outcome.

Objective To study the clinical and pathologic features,histological criteria and pathologic factors contributing to diagnosis of mixed epithelial and mesenchymal tumors(mixed m?llerian tumors,MMT)of the uterus.Methods A retrospective study of 102 cases of MMT of the uterus (74 adenofibromas including 9 recurrent cases,3 atypical polypoid adenomyomas,2 carcinofibromas,10 adenosareomas and 13 carcinosarcomas)was undertaken.Clinical records,gross features and tissue slices were reviewed.The follow-up data were analysed.Results The most common symptom was vaginal bleeding.Clinical signs included pelvic mass,uterine polyps,and enlarged uterus.Benign MMT usually presented as exophytic polypoid masses extending into the uterine cavity or protruding through the external os,often broad-based,lobulated and papillary.It was hard to distinguish low-grade malignant MMT from the benign ones by gross appearance.High-grade malignant MMT had the common gross features of carcinoma and sarcoma.Histologically,MMT showed a biphasic differentiation of mesenchymal and epithelial components.MMT were classified according to whether these elements were benign or malignant.Nine cases of adenofibroma without unique features for the diagnosis of adenosarcoma recurred at postoperative intervals of 3 to 96 months.Recurrent tumors were almost always confined to the original site.Conclusions Uterine MMT tumors according to WHO diagnostic criteria are not rare.The differential diagnosis depends on a multifactorial analysis.The recurrent adenofibromas may be a kind of borderline tumors with benign appearances and malignant behavior.

Objective:To study expressions of CD117 and CD34 in the patients with acute promyelocytic leukemia(APL,M3) and in M1-M2 subtype from FAB classification for acute leukemia(AL).The focus of the study would be laid on the clinical significance of CD117/CD34 co-expression in the patients of M3 subtype.Methods:Researched cases of acute nonlymphoblastic leukemia(ANLL) were divided into two groups:M1-M2 subtype and M3 subtype.Flow cytometery(FCM) was used to detect the rates of positive expression of CD117 and CD34 on bone marrow mononuclear cell(BMMNC) in 54 patients of M3 and 63 patients of M1-M2 subtype respectively.Meanwhile,we compared the differences between the rates of expression of CD117 and CD 34.And,the rates of CD117/CD34 co-expression in patients of M1-M2 subtype and M3 subtype were studied.Results:Our results revealed that the positive rates of CD117 expression in M1-M2 subtype and M3 subtype were 71.4%(45/63) and 66.7%(36/54) respectively(P=0.58).The positive rates of CD34 expression in M1-M2 subtype and M3 subtype were 66.7%(42/63) and 11.1%(6/54) respectively(P=0.000).The positive rates of CD117/CD34 co-expression in M1-M2 subtype and M3 subtype were 71.1%(45/63) and 7.4%(4/54) respectively(P=0.000).Conclusion:CD117 may be used as immunology marker for leukemia of myeloid origin.CD34 had lower expression in M3 subtype than in M1-M2 subtype.The positive rate of CD117/CD34 co-expression in M3 subtype was significantly lower than that in M1-M2 subtype,which can help for diagnosis of M3 subtype and help differentiate M3 subtype from M1-M2 subtype as well.

Objective To explore the feasibility of establishing animal model of schistosomiasis through subcutaneous injection of IMDM liquid and intramuscular injection of IMDM liquid both of which contained the cercariae.Methods The mice were infected with schistosome cercariae by three different ways: subcutaneous injection(Group A),intramuscular infection(Group B) and the classical method: skin infection(Group C).Forty-five days post-infection, the mice were sacrified and the adult schistosomes were investigated. The serum IgG antibodies were detected by indirect ELISA in 15 and 45 days after infection. Results The recovery adult worm rates were 39.2% in Group A,32.3% in Group B and 72.8% in Group C,and there was a significant difference among them (P